Royal Enfield 1010024 (1010024/B) – Hose (Air Filter to Solenoid) for Classic 500 Euro 4 & Bullet 500 Euro 4 | Genuine OEM

Royal Enfield 1010024 / 1010024-B is the genuine Hose (Air Filter to Solenoid) used in the secondary air / reed-valve / solenoid (AISV) plumbing on Euro-4 500cc models. It connects the airbox side to the solenoid/air-injection system and is a critical “small part” that prevents air leaks and keeps the emission control routing correct. 

This part is commonly needed when the original hose becomes hard, cracked, loose on ends, or oil/heat damaged, which can lead to inconsistent running and unwanted popping/backfiring on decel on bikes where the air-injection plumbing is disturbed (especially after long storage or rough installations). Because hoses are often replaced with local pipe that doesn’t seat properly, using OEM ensures correct shape, fit and durability. 

Important: 1010024/A is shown as superseded/replaced by 1010024/B, so for most buyers, 1010024/B is the correct current supply. 

Key Features

• Genuine Royal Enfield OEM hose – Part No. 1010024 / 1010024/B 

• Description: Hose (Air Filter to Solenoid) (factory terminology) 

• Correct fit for Euro-4 500cc solenoid + reed valve / AISV assemblies 

• Helps prevent air leaks / loose hose fitment caused by hardened old rubber

• OEM routing avoids kinks and poor sealing seen with generic hoses

• Supersession clarity: 1010024/A → 1010024/B 

• Best for restorations, emission plumbing repairs, and “stock-correct” rebuilds

• Sold as a single hose (order quantity as needed)

Compatibility Table 

Fitment rule (return control): This hose is confirmed in the Euro-4 “air filter to solenoid” diagrams above. If your bike is BS3/older UCE, BS6/J-Series, or a different emission layout, confirm via your VIN/microfiche before ordering. 

Variants

• 1010024/B (current replacement part) 

• 1010024/A (older number, superseded) – shown as replaced by 1010024/B 

FAQs 

1. What is Royal Enfield part number 1010024?
   It’s the OEM “Hose (Air Filter to Solenoid)” used in the Euro-4 500cc emission/air-injection plumbing (solenoid + reed valve/AISV routing). 

2. Is 1010024/A and 1010024/B the same? Which one should I buy?
   Royal Enfield cataloguing shows 1010024/A is replaced by 1010024/B. In most cases you should purchase 1010024/B as the active replacement. 

3. Which bikes does this hose fit?
   Confirmed in microfiche assemblies for Classic 500 Euro 4, Bullet 500 Euro 4, and Bullet Trials 500 Euro 4. 

4. What symptoms indicate this hose needs replacement?
   Common buyer reasons: hose feels hard/brittle, cracks at ends, loose fit on nipples, or incorrect “local pipe” installed causing leakage or disturbed air-injection routing. (Exact symptoms vary by bike condition and how the emission system is configured.) 

5. How do I confirm fitment before ordering to avoid returns?
   Match your parts diagram/VIN list for “Hose (Air Filter to Solenoid)” to 1010024 / 1010024-B. If you share your model variant + year (or VIN) and a photo of the hose routing, we can help verify before dispatch.